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Request dump surface with DMA buffer from clients

Chien Phung requested to merge chienpv/weston:improve_surface_dump_feature into main

Hello all,

In this MR, I have created a new protocol where clients can use this protocol to request the compositor to dump data from a specific surface. The request takes an argument of a wl_buffer object. The gl-renderer supports DMA buffer for improved performance.

I have provided a sample implementation, test and new client to verify content of the shotted-surface.

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